我要评论警告消息框主要是用来向用户户展示诸如警告、异常、完成和提示消息。一般实现的效果就是从系统窗口右下角弹出，然后加上些简单的显示和消失的动画。
创建警告框窗口
首先我们创建一个警告框窗口(form)，将窗口设置为无边框(formboderstyle=none)，添加上图片和内容显示控件
创建好警告框后，我们先让他能够从窗口右下角显示出来,
public partial class alertmessageform : form
{
public alertmessageform()
{
initializecomponent();
}
private int x, y;
public void show(string message)
{
this.startposition = formstartposition.manual;
this.x = screen.primaryscreen.workingarea.width - this.width;
this.y = screen.primaryscreen.workingarea.height - this.height;
this.location = new point(x, y);
labelcontent.text = message;
this.show();
}
}
警告框显示和关闭动画
添加一个计时器，通过时钟控制窗口背景渐入和淡出
// 警告框的行为（显示，停留，退出）
public enum alertformaction
{
start,
wait,
close
}
public partial class alertmessageform : form
{
public alertmessageform()
{
initializecomponent();
}
private int x, y;
private alertformaction action;
private void timer1_tick(object sender, eventargs e)
{
switch (action)
{
case alertformaction.start:
timer1.interval = 50;//警告显示的时间
this.opacity += 0.1;
if (this.opacity == 1.0)
{
action = alertformaction.wait;
}
break;
case alertformaction.wait:
timer1.interval = 3000;//警告框停留时间
action = alertformaction.close;
break;
case alertformaction.close:
timer1.interval = 50;//警告退出的时间
this.opacity -= 0.1;
if (this.opacity == 0.0)
{
this.close();
}
break;
default:
break;
}
}
public void show(string message)
{
//设置窗口启始位置
this.startposition = formstartposition.manual;
this.x = screen.primaryscreen.workingarea.width - this.width;
this.y = screen.primaryscreen.workingarea.height - this.height;
this.location = new point(x, y);
labelcontent.text = message;
this.opacity = 0.0;
this.show();
action = alertformaction.start;
//启动时钟
timer1.start();
}
}
处理多种不同类型的警告框
添加alerttype枚举，让警告框显示不同类型的消息，根据消息类型变换不同的消息主题颜色,并未show方法添加警告框类型参数
public enum alerttype
{
info,
success,
warning,
error
}
// 设置警告框主题
private void setalerttheme(alerttype type)
{
switch (type)
{
case alerttype.info:
this.picturebox1.image = properties.resources.info;
this.backcolor = color.royalblue;
break;
case alerttype.success:
this.picturebox1.image = properties.resources.success;
this.backcolor = color.seagreen;
break;
case alerttype.warning:
this.picturebox1.image = properties.resources.warning;
this.backcolor = color.darkorange;
break;
case alerttype.error:
this.picturebox1.image = properties.resources.error;
this.backcolor = color.darkred;
break;
default:
break;
}
}
// 显示警告框
public void show(string message, alerttype type){
// ...
setalerttheme(type);
}
处理多个警告框重叠问题
当然，完成上面的处理是不够的，当有多个消息的时候，消息框会重叠在一起；多个消息时，需要将消息窗口按一定的规则排列，这里我们设置每个消息窗口间隔一定的距离
public void show(string message, alerttype type)
{
// 设置窗口启始位置
this.startposition = formstartposition.manual;
// 设置程序每个打开的消息窗口的位置，超过10个就不做处理，这个可以根据自己的需求设定
string fname;
for (int i = 1; i < 10; i++)
{
fname = "alert" + i.tostring();
alertmessageform alert = (alertmessageform)application.openforms[fname];
if (alert == null)
{
this.name = fname;
this.x = screen.primaryscreen.workingarea.width - this.width;
this.y = screen.primaryscreen.workingarea.height - this.height * i - 5 * i;
this.location = new point(x, y);
break;
}
}
labelcontent.text = message;
this.opacity = 0.0;
setalerttheme(type);
this.show();
action = alertformaction.start;
//启动时钟
timer1.start();
}
鼠标悬停警告框处理
想要警告框停留的时间长一些，一中方式是直接设置警告框停留的时间长一些，另一种方式是通过判断鼠标在警告框窗口是否悬停，所以可以通过鼠标的悬停和离开事件进行处理
private void alertmessageform_mousemove(object sender, mouseeventargs e)
{
this.opacity = 1.0;
timer1.interval = int.maxvalue;//警告框停留时间
action = alertformaction.close;
}
private void alertmessageform_mouseleave(object sender, eventargs e)
{
this.opacity = 1.0;
timer1.interval = 3000;//警告框停留时间
action = alertformaction.close;
}
警告框的完整代码
public enum alerttype
{
info,
success,
warning,
error
}
public enum alertformaction
{
start,
wait,
close
}
public partial class alertmessageform : form
{
public alertmessageform()
{
initializecomponent();
}
private int x, y;
private alertformaction action;
private void timer1_tick(object sender, eventargs e)
{
switch (action)
{
case alertformaction.start:
timer1.interval = 50;//警告显示的时间
this.opacity += 0.1;
if (this.opacity == 1.0)
{
action = alertformaction.wait;
}
break;
case alertformaction.wait:
timer1.interval = 3000;//警告框停留时间
action = alertformaction.close;
break;
case alertformaction.close:
timer1.interval = 50;//警告关闭的时间
this.opacity -= 0.1;
if (this.opacity == 0.0)
{
this.close();
}
break;
default:
break;
}
}
public void show(string message, alerttype type)
{
// 设置窗口启始位置
this.startposition = formstartposition.manual;
// 设置程序每个打开的消息窗口的位置，超过10个就不做处理，这个可以根据自己的需求设定
string fname;
for (int i = 1; i < 10; i++)
{
fname = "alert" + i.tostring();
alertmessageform alert = (alertmessageform)application.openforms[fname];
if (alert == null)
{
this.name = fname;
this.x = screen.primaryscreen.workingarea.width - this.width;
this.y = screen.primaryscreen.workingarea.height - this.height * i - 5 * i;
this.location = new point(x, y);
break;
}
}
labelcontent.text = message;
this.opacity = 0.0;
setalerttheme(type);
this.show();
action = alertformaction.start;
//启动时钟
timer1.start();
}
private void alertmessageform_mousemove(object sender, mouseeventargs e)
{
this.opacity = 1.0;
timer1.interval = int.maxvalue;//警告框停留时间
action = alertformaction.close;
}
private void alertmessageform_mouseleave(object sender, eventargs e)
{
this.opacity = 1.0;
timer1.interval = 3000;//警告框停留时间
action = alertformaction.close;
}
private void buttonclose_click(object sender, eventargs e)
{
// 注销鼠标事件
this.mouseleave-= new system.eventhandler(this.alertmessageform_mouseleave);
this.mousemove -= new system.windows.forms.mouseeventhandler(this.alertmessageform_mousemove);
timer1.interval = 50;//警告关闭的时间
this.opacity -= 0.1;
if (this.opacity == 0.0)
{
this.close();
}
}
// 设置警告框主题
private void setalerttheme(alerttype type)
{
switch (type)
{
case alerttype.info:
this.picturebox1.image = properties.resources.info;
this.backcolor = color.royalblue;
break;
case alerttype.success:
this.picturebox1.image = properties.resources.success;
this.backcolor = color.seagreen;
break;
case alerttype.warning:
this.picturebox1.image = properties.resources.warning;
this.backcolor = color.darkorange;
break;
case alerttype.error:
this.picturebox1.image = properties.resources.error;
this.backcolor = color.darkred;
break;
default:
break;
}
}
}
以上就是windowsform实现警告消息框的实例代码的详细内容，更多关于windowsform实现警告消息框的资料请关注移动技术网其它相关文章！
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